diff --git a/general-info/release-20a.txt b/general-info/release-20a.txt
index dad2fc75f6258dc2596c7d987938d26a620b0d02..d1b3117f3029acbe1237650d4a90cb9e915e3b3a 100644
--- a/general-info/release-20a.txt
+++ b/general-info/release-20a.txt
@@ -39,6 +39,9 @@ New in this release:
     not to the directory as a whole.
 
   * Other changes:
+    - SOFTWARE-VERSION may return different results than previously.
+      UNIX:UNIX-UNAME is now used to obtain the software version on
+      Linux and Solaris.
 
   * Improvements to the PCL implementation of CLOS: